// intern.cpp
//
// Copyright (C) 2008  Maksim Sipos <msipos@mailc.net>
//
// This file is a part of the Ripe language project.
//
// Ripe is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include "util/standard.hpp"
#include <cstring>
#include "adts/intern.hpp"
#include "util/mem.hpp"

namespace Ripe {

using std::strlen;
using std::strcpy;

Intern::Intern()
{
}

bool Intern::exists(char* s)
{
  char* value;
  return map.get(s, &value);
}

char* Intern::intern(char* s)
{
  char* value;
  if (not map.get(s, &value)){
    // String does not exist in the table.
    uint32_t len = strlen(s);
    value = (char*) gc_malloc_a(len + 1);
    strcpy(value, s);
    map.set(value, value);
  }
  return value;
}

}
